G4ParticleChangeForDecay.cc

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//
// G4ParticleChangeForDecay class implementation
//
// Author: Hisaya Kurashige, 23 March 1998  
// --------------------------------------------------------------------
 
#include "G4ParticleChangeForDecay.hh"
#include "G4SystemOfUnits.hh"
#include "G4Track.hh"
#include "G4Step.hh"
#include "G4TrackFastVector.hh"
#include "G4DynamicParticle.hh"
#include "G4ExceptionSeverity.hh"
 
// --------------------------------------------------------------------
G4ParticleChangeForDecay::G4ParticleChangeForDecay()
  : G4VParticleChange()
{
}
 
// --------------------------------------------------------------------
G4ParticleChangeForDecay::~G4ParticleChangeForDecay()
{
}
 
// --------------------------------------------------------------------
G4ParticleChangeForDecay::
G4ParticleChangeForDecay(const G4ParticleChangeForDecay& right)
  : G4VParticleChange(right)
{
  theGlobalTime0        = right.theGlobalTime0;
  theLocalTime0         = right.theLocalTime0;
  theTimeChange         = right.theTimeChange;
  thePolarizationChange = right.thePolarizationChange;
}
 
// --------------------------------------------------------------------
G4ParticleChangeForDecay&
G4ParticleChangeForDecay::operator=(const G4ParticleChangeForDecay& right)
{
  if(this != &right)
  {
    if(theNumberOfSecondaries > 0)
    {
      for(G4int index = 0; index < theNumberOfSecondaries; ++index)
      {
        if((*theListOfSecondaries)[index])
          delete(*theListOfSecondaries)[index];
      }
    }
    delete theListOfSecondaries;
    theListOfSecondaries   = new G4TrackFastVector();
    theNumberOfSecondaries = right.theNumberOfSecondaries;
    for(G4int index = 0; index < theNumberOfSecondaries; ++index)
    {
      G4Track* newTrack = new G4Track(*((*right.theListOfSecondaries)[index]));
      theListOfSecondaries->SetElement(index, newTrack);
    }
 
    theStatusChange        = right.theStatusChange;
    theTrueStepLength      = right.theTrueStepLength;
    theLocalEnergyDeposit  = right.theLocalEnergyDeposit;
    theSteppingControlFlag = right.theSteppingControlFlag;
 
    theGlobalTime0        = right.theGlobalTime0;
    theLocalTime0         = right.theLocalTime0;
    theTimeChange         = right.theTimeChange;
    thePolarizationChange = right.thePolarizationChange;
  }
  return *this;
}
 
// --------------------------------------------------------------------
G4bool G4ParticleChangeForDecay::operator==(
  const G4ParticleChangeForDecay& right) const
{
  return ((G4VParticleChange*) this == (G4VParticleChange*) &right);
}
 
// --------------------------------------------------------------------
G4bool G4ParticleChangeForDecay::operator!=(
  const G4ParticleChangeForDecay& right) const
{
  return ((G4VParticleChange*) this != (G4VParticleChange*) &right);
}
 
// --------------------------------------------------------------------
void G4ParticleChangeForDecay::Initialize(const G4Track& track)
{
  // use base class's method at first
  G4VParticleChange::Initialize(track);
 
  const G4DynamicParticle* pParticle = track.GetDynamicParticle();
 
  // set TimeChange equal to local time of the parent track
  theTimeChange = track.GetLocalTime();
 
  // set initial Local/Global time of the parent track
  theLocalTime0  = track.GetLocalTime();
  theGlobalTime0 = track.GetGlobalTime();
 
  // set the Polarization equal to those of the parent track
  thePolarizationChange = pParticle->GetPolarization();
}
 
// --------------------------------------------------------------------
G4Step* G4ParticleChangeForDecay::UpdateStepForPostStep(G4Step* pStep)
{
  G4StepPoint* pPostStepPoint = pStep->GetPostStepPoint();
 
  if(isParentWeightProposed)
  {
    pPostStepPoint->SetWeight(theParentWeight);
  }
  // update polarization
  pPostStepPoint->SetPolarization(thePolarizationChange);
 
  // update the G4Step specific attributes
  return UpdateStepInfo(pStep);
}
 
// --------------------------------------------------------------------
G4Step* G4ParticleChangeForDecay::UpdateStepForAtRest(G4Step* pStep)
{
  // A physics process always calculates the final state of the particle
 
  G4StepPoint* pPostStepPoint = pStep->GetPostStepPoint();
 
  // update polarization
  pPostStepPoint->SetPolarization(thePolarizationChange);
 
  // update time
  pPostStepPoint->SetGlobalTime(GetGlobalTime());
  pPostStepPoint->SetLocalTime(theTimeChange);
  pPostStepPoint->AddProperTime(theTimeChange - theLocalTime0);
 
#ifdef G4VERBOSE
  G4Track* aTrack = pStep->GetTrack();
  if(debugFlag) { CheckIt(*aTrack); }
#endif
 
  if(isParentWeightProposed)
    pPostStepPoint->SetWeight(theParentWeight);
 
  //  Update the G4Step specific attributes
  return UpdateStepInfo(pStep);
}
 
// --------------------------------------------------------------------
void G4ParticleChangeForDecay::DumpInfo() const
{
  // Show header
  G4VParticleChange::DumpInfo();
 
  G4int oldprc = G4cout.precision(3);
  G4cout << " proposed local Time (ns)     : " << std::setw(20)
         << theTimeChange / ns << G4endl;
  G4cout << " initial local Time (ns)      : " << std::setw(20)
         << theLocalTime0 / ns << G4endl;
  G4cout << " initial global Time (ns)      : " << std::setw(20)
         << theGlobalTime0 / ns << G4endl;
  G4cout.precision(oldprc);
}
 
// --------------------------------------------------------------------
G4bool G4ParticleChangeForDecay::CheckIt(const G4Track& aTrack)
{
  G4bool exitWithError = false;
 
  G4double accuracy;
 
  // local time should not go back
  G4bool itsOK = true;
  accuracy     = -1.0 * (theTimeChange - theLocalTime0) / ns;
  if(accuracy > accuracyForWarning)
  {
    itsOK         = false;
    exitWithError = (accuracy > accuracyForException);
#ifdef G4VERBOSE
    G4cout << "  G4ParticleChangeForDecay::CheckIt    : ";
    G4cout << "the local time goes back  !!"
           << "  Difference:  " << accuracy << "[ns] " << G4endl;
    G4cout << "initial local time " << theLocalTime0 / ns << "[ns] "
           << "initial global time " << theGlobalTime0 / ns << "[ns] "
           << G4endl;
    G4cout << aTrack.GetDefinition()->GetParticleName()
           << " E=" << aTrack.GetKineticEnergy() / MeV
           << " pos=" << aTrack.GetPosition().x() / m << ", "
           << aTrack.GetPosition().y() / m << ", "
           << aTrack.GetPosition().z() / m << G4endl;
#endif
  }
 
  // dump out information of this particle change
#ifdef G4VERBOSE
  if(!itsOK) { DumpInfo(); }
#endif
 
  // exit with error
  if(exitWithError)
  {
    G4Exception("G4ParticleChangeForDecay::CheckIt()", "TRACK005",
                EventMustBeAborted, "time was  illegal");
  }
 
  // correction
  if(!itsOK)
  {
    theTimeChange = aTrack.GetLocalTime();
  }
 
  itsOK = (itsOK) && G4VParticleChange::CheckIt(aTrack);
  return itsOK;
}